Servis / faulty washing macine

had engineer out on 25th june to fix button panel and as he didn't have part he done temporary repair and said he would be back within 7-14 days with new part. still waiting. we now have another fault with washing machine and was told on monday it would be replaced. i am now being told to wait 3-5 days for a telephone call from an engineer. this machine is less than 3 months old